Radar-specific induction lightning rod and radar-specific lightning elimination facility installation structure

Abstract

The present invention relates to a radar-specific induction lightning rod and a radar-specific lightning elimination facility installation structure, wherein the lightning rod comprises an ordinary glass fiber reinforced plastic lightning rod lightning conductor, a lightning energy consumption body assembly and a lateral lightning induction metal lightning conductor, the ordinary glass fiber reinforced plastic lightning rod lightning conductor and the lateral lightning induction metal lightning conductor are installed in parallel on the top metal plate plane of the lightning energy consumption body assembly, and the height of the ordinary glass fiber reinforced plastic lightning rod lightning conductor is greater than the lateral lightning induction metal lightning conductor; the installation structure comprises a radar and at least three lightning rods surrounding the radar, the height of the ordinary glass fiber reinforced plastic lightning rod lightning conductor exceeds the height of the radar antenna, the installation height of the radar should ensure that the horizontal reference line of the radar antenna scanning surface is higher than the top of the lateral lightning induction metal lightning conductor, and the basic structure for installing the radar and the lightning rod can be fixed or movable. The present invention can provide high-reliability lightning protection for the radar system without affecting the normal operation of the radar system.

Description

Technical Field

[0001] The invention relates to a lightning elimination device and an installation structure thereof on a radar system, in particular to a lightning protection device for ensuring uninterrupted operation of the radar system during a thunderstorm, and belongs to the technical field of lightning protection safety of radar systems. Background Art

[0002] Radar is a tool for airspace detection and warning, with a wide range of applications, mainly covering the civil and military markets. Although radars are installed with lightning protection facilities in accordance with national lightning protection standards, lightning strikes still occur, and radar equipment is still damaged by lightning. It can be said that the reliability of lightning protection is a major technical problem in the radar industry.

[0003] In addition, the new generation of unmanned automatic weather radar stations have many weak electronic information auxiliary supporting systems, the value of system equipment is increasing, the system integration is getting higher and higher, there are many outdoor environment auxiliary equipment, the site safety isolation metal fence facilities are large in size, and the uninterrupted transmission service quality and technical requirements are becoming more and more stringent. These characteristics require that the radar system's lightning protection facilities be equipped with more reliable and effective response measures to the impact of natural disasters such as wind, thunder, and frost. Summary of the invention

[0004] The present invention aims to provide a radar-specific induction lightning elimination rod and a radar-specific lightning elimination facility installation structure, which can provide lightning protection for the radar system without affecting the normal operation of the radar system and has high lightning protection reliability.

[0005] The main technical solutions of the present invention are:

[0006] A radar-specific induction lightning rod comprises an ordinary glass fiber reinforced plastic lightning rod lightning conductor, a lightning energy consumption body assembly and a lateral lightning inducing metal lightning conductor. The ordinary glass fiber reinforced plastic lightning rod lightning conductor and the lateral lightning inducing metal lightning conductor are both installed on the top metal plate plane of the lightning energy consumption body assembly, and the two are spaced and arranged side by side on the top metal plate plane. The height of the ordinary glass fiber reinforced plastic lightning rod lightning conductor is greater than that of the lateral lightning inducing metal lightning conductor.

[0007] The ordinary glass fiber reinforced plastic lightning rod lightning conductor can adopt a whole ordinary glass fiber reinforced plastic lightning rod.

[0008] The lateral lightning attracting metal lightning conductor is preferably an oblique cone structure.

[0009] The height of the lateral lightning-inducing metal lightning conductor is not less than 1 meter, and the bottom area is not less than 3000 square millimeters.

[0010] The lateral lightning inducing metal lightning receptor is made of non-sprayed pure metal material.

[0011] The lateral lightning inducing metal lightning conductor is preferably made of corrosion-resistant material.

[0012] The lightning energy consumption body component is provided with a consumption resistor, the power level of the consumption resistor reaches 4×20 kA×500 kV or above, the basic impedance level requirement is a voltage level of 500 kV or above, and the current passing through is less than 1 mA, and the basic physical size of the lightning energy consumption body component is above 30,000 square millimeters×1200 millimeters.

[0013] There can be one to three lateral lightning attracting metal lightning receptors. When there are multiple lateral lightning attracting metal lightning receptors, the shapes and sizes of the various lateral lightning attracting metal lightning receptors are the same, and the installation directions should ensure that their cones are inclined in different directions.

[0014] The radar-specific induction lightning rod may further include a fixed base, and the lower flange of the lightning energy consumption body component is detachably connected to the fixed base.

[0015] A radar-specific lightning elimination facility installation structure comprises a radar and a radar-specific inductive lightning elimination rod without a fixed base, wherein the radar is installed on a radar pedestal, the radar pedestal is arranged on a tower, the radar-specific inductive lightning elimination rod is installed on a lightning elimination rod fixing seat located on the tower, there are at least three radar-specific inductive lightning elimination rods, which surround the radar, the height of the ordinary fiberglass lightning rod lightning conductor exceeds the height of the radar antenna, and the height of the radar pedestal should ensure that the horizontal reference line of the radar antenna scanning surface is higher than the top of the lateral lightning inducing metal lightning conductor.

[0016] The lateral lightning attracting metal lightning receptors on all radar-specific induction lightning rods surrounding the same radar are inclined in at least three different directions on the horizontal plane, among which there is only one lateral lightning attracting metal lightning receptor inclined in the direction of the direct side of the radar.

[0017] A radar-specific lightning elimination facility installation structure comprises a radar and the radar-specific inductive lightning elimination rod with a fixed base, wherein the radar is installed on a mobile radar carrier through a rack, and the radar-specific inductive lightning elimination rod is installed on the mobile radar carrier, and there are at least three radar-specific inductive lightning elimination rods surrounding the radar, the height of the ordinary fiberglass lightning rod lightning conductor exceeds the height of the radar antenna, and the height of the rack should ensure that the horizontal reference line of the radar antenna scanning surface is higher than the top of the lateral lightning inducing metal lightning conductor.

[0018] The lateral lightning attracting metal lightning receptors on all radar-specific induction lightning rods surrounding the same radar are inclined in at least three different directions on the horizontal plane, among which there is only one lateral lightning attracting metal lightning receptor inclined in the direction of the direct side of the radar.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention utilizes a high-power, high-impedance, and large-volume lightning energy consumption component connected in series behind an ordinary fiberglass lightning rod lightning conductor to directly consume harmful lightning energy, eliminate the superimposed counterattack of the lightning rack potential and the ground potential on the radar system equipment, eliminate the real cause of lightning damage to the radar system, and ensure the lightning protection safety of the radar system with high reliability.

[0021] 2. The present invention directly utilizes an ordinary radar-specific fiberglass lightning rod as a lightning conductor for the radar-specific induction lightning rod, which does not affect the normal operation of the radar within the radar working surface. It utilizes the height advantage of the ordinary fiberglass lightning rod lightning conductor to actively strike thunderclouds, thereby ensuring the normal use of the radar system around the clock.

[0022] 3. The present invention sets a lateral lightning-attracting metal lightning conductor with an oblique cone structure in parallel with the ordinary fiberglass lightning rod lightning conductor, which has the surface area advantage of actively sensing the electric field in space, actively attracts the electric field of the thundercloud in the surrounding space by induction, and effectively eliminates the risk of side shielding.

[0023] 4. The present invention utilizes the active lightning attracting capability of the lateral lightning attracting metal lightning conductors arranged in multiple directions around the radar to eliminate the blind spots of lateral lightning strikes and meet the protection requirements of all-round complex environment systems.

[0024] 5. The protection reliability of the present invention is independent of the value of the grounding resistance, so the protection reliability is high, the comprehensive application cost is low, the economy is good, and it can be widely used in all new and modified radar working environments.

[0025] 6. The lightning energy consumption body assembly and its above parts are installed in combination with different types of fixed bases, which can meet a variety of different application occasions in fixed and mobile occasions, and can meet the application of military special occasions and the integration needs of military and civilians. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of a conventional radar system lightning protection device;

[0027] Figure 2 It is a structural schematic diagram of the first embodiment of the radar-specific induction lightning rod (including a lateral lightning-inducing metal lightning receptor and no fixed base);

[0028] Figure 3 It is a structural schematic diagram of the second embodiment of the radar-specific induction lightning rod (including two lateral lightning-inducing metal lightning receptors and no fixed base);

[0029] Figure 4It is a structural schematic diagram of the third embodiment of the radar-specific induction lightning rod (including a lateral lightning-inducing metal lightning receptor and a fixed base);

[0030] Figure 5 It is a structural schematic diagram of the fourth embodiment of the radar-specific induction lightning rod (including two lateral lightning-inducing metal lightning receptors and a fixed base);

[0031] Figure 6 yes Figure 2 The figure shows a schematic diagram of the installation structure of a radar-specific induction lightning rod. DETAILED DESCRIPTION

[0032] The invention discloses a radar-specific induction lightning rod. Figure 2 , 3 As shown, it includes an ordinary glass fiber reinforced plastic lightning rod lightning terminal 1, a lightning energy consumption body assembly 2 and a lateral lightning induction metal lightning terminal 3. The ordinary glass fiber reinforced plastic lightning rod lightning terminal and the lateral lightning induction metal lightning terminal are both fixedly mounted on the corresponding flange vacancy of the top metal plate 2-1 plane of the lightning energy consumption body assembly through flanges, and the two are located side by side on the upper part of the top metal plate plane of the lightning energy consumption body, and the height of the ordinary glass fiber reinforced plastic lightning rod lightning terminal is greater than that of the lateral lightning induction metal lightning terminal. The ordinary glass fiber reinforced plastic lightning rod lightning terminal is in an electrical series relationship with the lightning energy consumption body assembly, and in an electrical parallel relationship with the lateral lightning induction metal lightning terminal.

[0033] The present application utilizes the high activeness of the common glass fiber reinforced plastic lightning arrester and the lightning strike, and the lightning current energy generated by the lightning strike is consumed by the lightning energy consumption body component connected after the common glass fiber reinforced plastic lightning arrester, thereby eliminating or reducing the harmful lightning energy output, thereby eliminating or reducing the counterattack strength of the lightning rack potential ε1 and the ground potential ε2 (such as Figure 1 As shown), at the same time, the present application utilizes the lateral lightning-inducing metal lightning conductor to perform lateral active lightning induction, thereby making up for the small active sensing ability of the ordinary fiberglass lightning rod lightning conductor, reducing or eliminating the risk of lateral shielding caused thereby. Based on the above, the present application can achieve reliable lightning protection for the radar system.

[0034] According to the applicant's research results over the years, the energy of the induced lightning transmitted through the air is not enough to cause damage to the relevant parts of the radar's power supply system. The real reason for the damage to the power supply system is the superposition of the rack potential, ground potential and any port power supply voltage with opposite polarity in the power supply system generated by the direct lightning current, which is referred to as ground potential counterattack damage. The traditional direct lightning protection technology is to attract lightning, and direct lightning ground flash is required to play a protective role.

[0035] like Figure 1As shown in the figure, the traditional radar lightning protection facilities are to install three or four special lightning rods around the radar, set up lightning strips on the parapet, and use the steel bars in the four structural columns of the building as down conductors. Since the entire tower structure is a shear wall and a hidden column is set inside the wall to form a concrete body, the shear wall is used as a side lightning protection and shielding measure. The tower and podium building foundations serve as natural grounding bodies and are connected to the artificial grounding grid to form a common grounding system. Considering the frequency characteristics of radar scanning, the support rod B of the lightning rod lightning receptor A is made of fiberglass, and the lightning rod lightning receptor is directly connected to the grounding system with copper wire.

[0036] When a direct lightning strike to ground occurs on the lightning rods around the radar tower system, the direct lightning strike to ground current i is introduced to the rack system through the lightning rod, generating a rack potential ε1, which is discharged to the grounding system, and a ground potential ε2 is generated in the grounding system. This rack potential and ground potential have positive and negative polarities, and will cause ground potential counterattack damage to the radar equipment power supply system (the port potential of the radar equipment power supply has positive and negative polarities) through the radar equipotential connection system (including the basic rack, system neutral line and ground line). At a certain moment, the ground potential and any one-phase port of the power supply system with opposite polarity are superimposed and counterattacked, which will damage the active radar equipment of the power supply system of that phase. In this way, according to the principle of lightning protection measures adopted by traditional radar systems, the better the quality of lightning protection measures, the more serious the potential for damage. For example, the better the quality of the lightning rod, the higher the probability of lightning strike; the better the quality of the down conductor system, the smaller the resistance of the front-end path, the smaller the consumption of harmful energy of lightning strike in the front-end path, and the larger the amplitude of the ground potential; the smaller the resistance of the grounding system, the larger the lightning current of the lightning strike, and the longer the duration of the harmful lightning ground potential, all of which will lead to serious damage risks.

[0037] The present application consumes the lightning current energy generated by lightning strikes in advance, rather than directly conducting and consuming the harmful lightning energy behind the grounding system, resulting in the lightning energy consumed behind the lightning current path being accompanied by the generation of ultra-high voltage ground potential, thereby greatly reducing or even eliminating the strength of the rack potential and the ground potential, thereby effectively suppressing the damage caused by ground potential counterattack, and meeting the protection reliability requirements under the premise of continuous and uninterrupted normal operation of the radar system in harsh environments.

[0038] The ordinary glass fiber reinforced plastic lightning rod lightning conductor can directly adopt a whole ordinary glass fiber reinforced plastic lightning rod finished product.

[0039] The side-directing lightning metal lightning receptor is preferably an oblique cone structure. Due to the advantage of a large surface area for actively inducing the electric field in space, it actively attracts the electric field of the thundercloud in the upper space by induction, thereby effectively eliminating the risk of side-directing lightning strikes. Furthermore, the side-directing lightning metal lightning receptor can be an oblique circular cone structure, which is convenient for manufacturing.

[0040] The vertical height of the top of the lateral lightning attracting metal lightning receptor should be no less than 1 meter, and the bottom area should be no less than 3000 square millimeters. The larger the lateral lightning attracting metal lightning receptor is, the stronger its induction capability is.

[0041] The side-direction lightning attracting metal lightning receptor should be made of pure metal material without spraying. Further, the side-direction lightning attracting metal lightning receptor is preferably made of corrosion-resistant material (such as 304 stainless steel).

[0042] The basic technical requirements of the lightning energy consumption body component are high power, high impedance and large volume. The lightning energy consumption body component is provided with a consumption resistor. The so-called high power means that the power level of the consumption resistor should reach 4×20 kA×500 kV or above; the so-called high impedance means that the basic impedance level requirement is a voltage level of 500 kV or above, and the current passing through is less than 1 mA; the so-called large volume means that the basic physical size of the lightning energy consumption body component is 30,000 square millimeters×1200 millimeters or above.

[0043] The side-lightning metal lightning receptors can be one to three to meet the needs of different active lightning attracting capabilities in different occasions. The higher the required active lightning attracting capability, the more side-lightning metal lightning receptors should be used for the radar-specific induction lightning elimination rod. Figure 2 , 4 The figures are respectively a radar-specific induction lightning rod with a single lateral lightning metal lightning conductor and a radar-specific induction lightning rod with double lateral lightning metal lightning conductors. When there are multiple lateral lightning metal lightning conductors, the shapes and sizes of the lateral lightning metal lightning conductors are preferably the same, and the installation direction should ensure that the cones thereof are inclined in different directions, and the inclined direction is away from the ordinary glass fiber reinforced plastic lightning rod lightning conductor, that is, they are arranged obliquely relative to the ordinary glass fiber reinforced plastic lightning rod lightning conductor.

[0044] The present invention also discloses another radar-specific induction lightning rod, such as Figure 4 , 5 As shown, in addition to the aforementioned components of the radar-specific inductive lightning rod, it also includes a fixed base 4, which is an independent metal component and is used as a transition connector when the radar-specific inductive lightning rod is installed on the installation base. During installation, the lower flange of the lightning energy consumption body assembly can be detachably fixed to the fixed base, and the fixed base can be fixedly connected to the basic ground around the radar or other radar carrier equipment. The difference is the connection interface structure between the fixed base and the ground or the radar carrier equipment. For the latter, it can conveniently meet the needs of mobile occasions. When the radar carrier equipment is a radar carrier vehicle, the corresponding fixed base is a base of a vehicle-specific structure.

[0045] based on Figure 2 , 3The invention also discloses a radar-specific induction lightning elimination rod, a radar-specific lightning elimination facility installation structure that integrates a tower-based radar and a lightning elimination rod commonly used in meteorological systems, such as Figure 6 As shown, it includes a tower 6, a radar pedestal 5, a lightning rod fixing seat 7 and the radar-specific inductive lightning rod. The radar is installed on the radar pedestal 5, the radar pedestal is installed on the tower 6, and the radar-specific inductive lightning rod is installed on the lightning rod fixing seat 7 which is integrated with the radar pedestal and located on the tower 6. Specifically, the lower flange of the lightning energy consumption body assembly is installed on the lightning rod fixing seat 7, and the lightning rod fixing seat is located at the design installation position of the radar antenna protection lightning rod. The radar-specific inductive lightning rod has at least three ( Figure 6 In the embodiment shown, there are four of them), which surround the radar and are used to ensure the lightning protection safety of the radar system without affecting the normal operation of the radar system. The height of the ordinary fiberglass lightning rod lightning conductor is determined according to the height of the radar system and should usually exceed the height of the antenna of the radar. The height of the radar base frame should ensure that the horizontal reference line S of the radar antenna scanning surface is higher than the position of the conical apex of the lateral lightning metal lightning conductor, so that there is no metal device blocking the radar scanning surface within the entire 360-degree range, so as not to affect the normal operation of the radar system.

[0046] Furthermore, the lateral lightning metal lightning receptors on all radar-specific induction lightning rods surrounding the same radar are preferably inclined in at least three different directions on the horizontal plane. The lateral lightning metal lightning receptors should be inclined in as many directions as possible to eliminate the blind spots of side strike protection and meet the protection requirements of all-round complex environment systems.

[0047] Other details of the installation structure not mentioned above can still be implemented in accordance with GB50057-94 "Building Lightning Protection Design Code", QX 2-2000 "New Generation Weather Radar Station Lightning Protection Technical Specifications" and QX3-2000 "Meteorological Information System Lightning Electromagnetic Pulse Protection Specifications".

[0048] based on Figure 4 , 5The radar-specific inductive lightning rod shown in the figure, the present invention also discloses another radar-specific lightning elimination facility installation structure, including a radar, the radar-specific inductive lightning rod and a mobile radar carrier, the radar is installed on the mobile radar carrier through a rack, and the radar-specific inductive lightning rod is installed on the mobile radar carrier, specifically, the lightning energy consumption body assembly and the parts above it are installed on the mobile radar carrier through the fixed base. There are at least three radar-specific inductive lightning rods, which surround the radar, the height of the ordinary fiberglass lightning rod lightning conductor exceeds the height of the radar antenna, and the height of the rack should ensure that the horizontal reference line of the radar antenna scanning surface is higher than the top of the lateral lightning inducing metal lightning conductor. The radar-specific lightning elimination facility installation structure is aimed at occasions where the radar needs to be movable.

[0049] Similarly, the lateral lightning metal lightning receptors on all radar-specific induction lightning rods surrounding the same radar are preferably tilted in at least three different directions on the horizontal plane. The lateral lightning metal lightning receptors should be tilted in as many directions as possible to eliminate the blind spots of side strike protection and meet the protection requirements of all-round complex environment systems. Among them, there is only one lateral lightning metal lightning receptor tilted in the positive side direction of the radar, and the positive side direction refers to the direction perpendicular to the tangent plane of the facade when the corresponding radar is installed.

[0050] The present invention adopts targeted measures from two aspects: the cause of lightning damage to the radar system and the special requirements of the radar lightning protection facilities, and creatively solves the problem of low reliability of the existing lightning protection technology for the radar system.

[0051] The present invention has a simple structure and is easy to implement. It does not affect the scanning surface of the radar antenna, has high reliability in lightning protection, does not require grounding modification and maintenance costs, can be used in a fixed or mobile manner, is suitable for use in new construction and renovation projects, has the advantages of high cost performance in comprehensive consideration of safety and economy, can be widely used in all military and civilian radar working environments, and has significant economic and social benefits.

Claims

1. A radar-specific induction lightning rod, characterized in that: It comprises an ordinary glass fiber reinforced plastic lightning rod lightning conductor, a lightning energy consumption body assembly and a lateral lightning induction metal lightning conductor, wherein the ordinary glass fiber reinforced plastic lightning rod lightning conductor and the lateral lightning induction metal lightning conductor are both installed on the top metal plate plane of the lightning energy consumption body assembly, and the two are located side by side on the top metal plate plane, and the height of the ordinary glass fiber reinforced plastic lightning rod lightning conductor is greater than that of the lateral lightning induction metal lightning conductor; The ordinary glass fiber reinforced plastic lightning rod lightning conductor adopts a whole ordinary glass fiber reinforced plastic lightning rod; The lateral lightning attracting metal lightning conductor is an oblique cone structure; The side-lightning metal lightning conductor is made of non-sprayed corrosion-resistant pure metal material, the height of the side-lightning metal lightning conductor is not less than 1 meter, and the bottom area is not less than 3000 square millimeters; The lightning energy consumption body component is provided with a consumption resistor, the power level of the consumption resistor reaches 4×20 kA×500 kV or above, the basic impedance level requirement is a voltage level of 500 kV or above, and the current passing through is less than 1 mA, and the basic physical size of the lightning energy consumption body component is above 30,000 square millimeters×1200 millimeters.

2. The radar-specific induction lightning rod as claimed in claim 1, characterized in that: There are one to three lateral lightning-inducing metal lightning conductors. When there are more than one, the installation direction should ensure that the cones are inclined in different directions.

3. The radar-specific induction lightning rod according to claim 1 or 2, characterized in that: It also includes a fixed base, and the lower flange of the lightning energy consumption body component is detachably connected to the fixed base.

4. A radar-specific mine elimination facility installation structure, characterized in that: It comprises a radar and the radar-specific induction lightning rod as claimed in claim 1 or 2, wherein the radar is mounted on a radar pedestal, the radar pedestal is arranged on a tower, the radar-specific induction lightning rod is mounted on a lightning rod fixing seat located on the tower, there are at least three radar-specific induction lightning rods, which surround the radar, the height of the ordinary fiberglass lightning rod lightning conductor exceeds the height of the radar antenna, and the height of the radar pedestal should ensure that the horizontal reference line of the radar antenna scanning surface is higher than the top of the lateral lightning inducing metal lightning conductor.

5. The radar-specific mine elimination facility installation structure as claimed in claim 4, characterized in that: The lateral lightning attracting metal lightning receptors on all radar-specific induction lightning rods surrounding the same radar are inclined in at least three different directions on the horizontal plane, among which there is only one lateral lightning attracting metal lightning receptor inclined in the direction of the direct side of the radar.

6. A radar-specific mine elimination facility installation structure, characterized in that: It comprises a radar and the radar-specific inductive lightning rod as described in claim 3, wherein the radar is installed on a mobile radar carrier through a rack, the radar-specific inductive lightning rod is installed on the mobile radar carrier, there are at least three radar-specific inductive lightning rods, and they surround the radar, the height of the ordinary fiberglass lightning rod lightning conductor exceeds the height of the radar antenna, the height of the rack should ensure that the horizontal reference line of the radar antenna scanning surface is higher than the top of the lateral lightning metal lightning conductor, and the lateral lightning metal lightning conductors on all radar-specific inductive lightning rods surrounding the same radar are inclined in at least three different directions on the horizontal plane, among which there is only one lateral lightning metal lightning conductor inclined in the direction of the direct side of the radar.

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